package easy.删除排序链表中的重复元素;


public class Solution {
    public ListNode deleteDuplicates(ListNode head) {
        if (head == null) {
            return head;
        }
        ListNode cur = head;
        while (cur.next != null) {
            if (cur.val == cur.next.val) {
                cur.next = cur.next.next;
            } else {
                cur = cur.next;
            }
        }

        return head;
    }

    public static void main(String[] args) {
        ListNode head = new ListNode(1, new ListNode(1, new ListNode(2)));
        ListNode head2 = new ListNode(1, new ListNode(1, new ListNode(2,
                new ListNode(3, new ListNode(3)))));
        Solution solution = new Solution();
        System.out.println(solution.deleteDuplicates(head));
        System.out.println(solution.deleteDuplicates(head2));
    }
}
